Synonyms|143Antonyms|35|Broader|0Narrower|0Related|115
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restricted(clandestine, underground, undisclosed)
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reticent(clandestine, underground, undisclosed)
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retired(clandestine, underground, undisclosed)
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sensitive
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shrouded(clandestine, underground, undisclosed)
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silent
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top-secret(clandestine, underground, undisclosed)
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uncertain
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under the table(expression, idiom, close, sensitive, inside)
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under wraps(expression, sensitive, clandestine, underground, undisclosed)
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undercover(clandestine, underground, undisclosed)
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underhand(clandestine, underground, undisclosed)
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unenlightened(clandestine, underground, undisclosed)
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unfrequented(clandestine, underground, undisclosed)
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unintelligible(clandestine, underground, undisclosed)
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unprofitable
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unpublished(clandestine, underground, undisclosed)
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unrevealed(clandestine, underground, undisclosed)
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unrewarding
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useless
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APASmart Define. (2015). unacknowledged thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unacknowledged/thesaurus/synonyms
ChicagoSmart Define. 2015. "unacknowledged thesaurus" https://smartdefine.org/unacknowledged/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unacknowledged thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unacknowledged/thesaurus/synonyms>.
MLASmart Define. "unacknowledged thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/unacknowledged/thesaurus/synonyms>